Combining Texts

Ideas for 'Logical Consequence', 'Introduction to the Theory of Logic' and 'Positions'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 4. Pure Logic

10690

Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]

5. Theory of Logic / A. Overview of Logic / 5. First-Order Logic

10897

A first-order 'sentence' is a formula with no free variables [Zalabardo]